Intermittent operating mechanism for coal-cutters.



J. VALENCICH.

INTERMITTENT OPERATING MECHANISM FOR COAL CUTTERS.

APPLICATION HLED MAI-L14. 19H

Patented Feb. 5, 1918.

JOSEF VALENCICI-I, 05 HASTINGS, COLORADO.

INTERIVIITTENT OPERATING MECHANISM FOR GOAL-CUTTERS.

Specification of Letters Patent.

Patented Feb. 5, 1913..

Application filed March 14, 1917. Serial No. 154,731.

To all whom it may concern:

Be it known that I, Josnr VALENCICH, a subject of the Emperor of Austria, residing at Hastings, in the county of Las Animas and State of Colorado, have invented cer-. tain new and useful Improvements in Intermittent Operating Mechanism for Coal-Cutters, of which the following is a specification.

This invention relates to certain new and useful improvements in intermittent operating mechanism for coal cutters.

The primary object of the invention is the provision of a coal cutter adapted for use in a mine, the same being mechanically 0perable and capable of being mechanically fed into the work.

A further object of the invention is the provision of a mechanicalcoal cutting machine provided with a serviceable anchoring means and arranged with means for moving cutting members against a wall of coal in a. step by step movement.

A still further object of the invention is the provision of a machine having a coal cutting portion and operating and feeding means therefor, while a serviceable anchoring mechanism and transferring means are also provided.

In the drawings forming a part of this application and in which like designating characters refer to corresponding parts throughout the several views Figure 1 is a side elevation of the device.

Fig. 2 is a top plan view thereof.

Fig. 3 is a vertical sectional view taken upon line VIII VIII of Fig. 1.

Fig. 4 is a vertical sectional view taken upon line IX-IX of Fig. 1.

The present machine broadly consists of an elongated channel-shaped base 10 having a frame or body 11 longitudinally shiftably arranged therein and provided with a fork 12 removably secured to the forward end of the said frame and having a cutting wheel 13 journalcd for revolution within the said fork and adapted to be positioned in a substantially horizontal plane. A crank shaft 11 is journaled between the body 11 and a frame iron 15 mounted thereon while a sprocket 1G is secured to the said shaft over which a chain 17 is arranged for connection with a relatively larger sprocket 18 secured to the cutter wheel 13, whose teeth are arranged in staggered relation upon the wheel 13.

' pivots alternately forwardly and rearwardly,

thereby revolving the shaft 1 1 and turning the cutter wheel 13 in either direction desired. The fork 12 has a tang 25 positioned within a socket 26 in the forward end of the body 11, the connection. being made detachable by means of a removable wedging key 27.

A toothed rack 28 is centrally arranged upon the upper face of the base 10, the body 11 having angular flanges 29 positioned at opposite sides of the rack and over which flanges 30 are retainingly positioned, in this manner mounting the body 11 upon its base removable only at the opposite ends of the base. A toothed wheel 31 is journaled within a slotted housing 32 at the rear end of the body 11 by means of an axle 33, the said wheel being in constant mesh with the rack 28 when the device is operatively assembled. A bifurcated pedal 34 straddles the housing 32 and is pivoted upon the opposite ends of the axle 33, the same having a forwardly projecting pivoted pawl 35 for engaging the teeth of the wheel 31. A pivoted hook 36 is carried by the housing 32 and normally positioned horizontally for supporting a rearwardly-extending pivoted pawl 37 carried by the said pedal when the pawl 37 is inoperatively positioned. A toe strap 38 is arranged upon the pedal 34, it being designed to place the foot of the operator upon the pedal within the strap and by a forward movement the wheel 31 is revolved upon the rack 28, feeding the body 11 and its cutter wheel 13 forwardly, the base 10 being anchored by suitable devices, such as oppositely-extending hooks 39 arranged upon fingers 40 of the said base and having sharpened ends 4:1 driven into the bottom of the mine. By holding the pawl 35 inoperative, the extreme forward movement of the pedal 3 1 will engage the pawl 37 with the wheel 31 allowing the said wheel to be reversely turned for feeding the body 11 rearwardly, removing the wheel 13 from the wall of coal. By elevating the pawl 37, the hook 36 may be swung forwardly into engagement with the wheel 31 for locking the body 11 I stationary upon the base. The cutter wheel 13 is provided with a plurality of radially projecting teeth or cutter blades 42, it being understood that when the base 10 is anchored at a suitable distance from a coal bank, the pedal 34 may be operated to feed the body 11 forwardly for engaging the teeth 41 with the coal and thereupon the levers 19 and 20 may be manually operated for revolving the cutter wheel 13 and cutting the coal as desired. The bodyll may be forwardly impelled in a step by step movement by means of the pedal 34 as the cutting operation progresses.

A suitable anchoring post 43 is arranged having a lower section 44 rectangular in cross-section provided with sharpened feet 45 at the bottom thereof adapted to be embedded in the floor of the mine while an upper section 46 of tubular arrangement telescopes therewith for engaging the ceiling or roof of the mine.

A U-shaped clamp 49 is provided for maintaining the section 46 at the desired height upon the section 44, the said clamp being slidably arranged within opposite notches 50 provided in pairs in the sides of the section 44. A retaining hook 51 is arranged for connecting the two side portions of the clamp 49 together when operatively arranged. It will be understood that the post 43 may be positioned upright within the mine by shifting the sections 44 and 46 and clamp 49, while the base 10 is readily attached thereto for maintaining the base stationary and with the hooks l1 anchoring the same against movement.

One manner of arranging the anchoring post 43 is to position the same in an upright manner with the pin 64 carried by a sliding collar 65 upon the post section 44 within a perforation 66 arranged through the rear end of the-base 10. The collar 65 may be arranged either side up that is desired while a set screw .67 is carried by the collar for engaging within sockets 68 upon the adjacent edge of the section 44 for maintaining the collar 65 in its adjusted position.

WVhat I claim as new is i A device of the type described, including Copies of this patent may be obtained for five cents each, by addressing the fiommissionerof ZPatents,

Washington, D. C. V

.a toothed rack longitudinally carried by a I 

